USB: use PM core routines to enable/disable autosuspend
This patch (as1366) replaces the private routines
usb_enable_autosuspend() and usb_disable_autosuspend() with calls to
the standard pm_runtime_allow() and pm_runtime_forbid() functions in
the runtime PM framework. They do the same thing.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 43c002e..b65c1ea 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -389,7 +389,7 @@
struct usb_device *udev = to_usb_device(dev);
const char *p = auto_string;
- if (udev->state != USB_STATE_SUSPENDED && udev->autosuspend_disabled)
+ if (udev->state != USB_STATE_SUSPENDED && !udev->dev.power.runtime_auto)
p = on_string;
return sprintf(buf, "%s\n", p);
}
@@ -401,7 +401,7 @@
struct usb_device *udev = to_usb_device(dev);
int len = count;
char *cp;
- int rc;
+ int rc = count;
cp = memchr(buf, '\n', count);
if (cp)
@@ -411,17 +411,17 @@
if (len == sizeof on_string - 1 &&
strncmp(buf, on_string, len) == 0)
- rc = usb_disable_autosuspend(udev);
+ usb_disable_autosuspend(udev);
else if (len == sizeof auto_string - 1 &&
strncmp(buf, auto_string, len) == 0)
- rc = usb_enable_autosuspend(udev);
+ usb_enable_autosuspend(udev);
else
rc = -EINVAL;
usb_unlock_device(udev);
- return (rc < 0 ? rc : count);
+ return rc;
}
static DEVICE_ATTR(level, S_IRUGO | S_IWUSR, show_level, set_level);